How did Galileo show that gravity is a constant acceleration and not different for each object?
1. He watched pendulums swing and recorded their speed and weight.
2. He shot two arrows straight into the sky and watched them fall.
3. He dropped two objects with different masses from the Tower of Pisa.
4. He rolled hundreds of different balls down the same hill and recorded their speeds.
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How did Galileo show that gravity is a constant acceleration and not different for each object?
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